/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hop.www;

import org.apache.commons.lang.StringUtils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ServletTestUtils {
  public static final char[] BAD_CHARACTERS_TO_ESCAPE = {'<', '>', '\'', '\"'};
  public static final String BAD_STRING_TO_TEST = "!@#$%\"\'^&*()<>&/test string&";
  // Pattern to check that ampersand character '&' was successfully escaped.
  // Eg search excluding '&amp;', '&lt;', '&gt;', '&quote;', '&apos;', and numeric reference '&#'
  public static final Pattern PATTERN =
      Pattern.compile(
          "(&(?=(?!amp;))(?=(?!#[0-9a-f]{1,5};))(?=(?!lt;))(?=(?!gt;))(?=(?!quote;))(?=(?!apos;)))");

  public static String getInsideOfTag(String tag, String string) {
    String open = "<" + tag + ">";
    String close = "</" + tag + ">";
    return string.substring(string.indexOf(open) + open.length(), string.indexOf(close));
  }

  public static boolean hasBadText(String value) {
    Matcher matcher = PATTERN.matcher(value);
    if (matcher.find()) {
      return true;
    }
    return StringUtils.containsAny(value, BAD_CHARACTERS_TO_ESCAPE);
  }
}
